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Severndroog Castle

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Why is Severndroog Castle triangular? Perched atop Shooter’s Hill, Severndroog Castle isn’t your typical castle. This whimsical, triangular structure, complete with hexagonal turrets, is actually a folly. It was built in 1784 by Lady James of Eltham as a testament to her late husband, Commodore Sir William James. A celebrated figure in the East India Company, Sir William James had a knack for naval victories. One such victory involved capturing the island fortress of Suvarnadurg, the namesake of this very castle. Severndroog Castle, despite its whimsical nature, played a surprisingly important role in the world of cartography. General William Roy, during his efforts to connect the Royal Greenwich Observatory with the Paris Observatory, utilized Severndroog Castle. He temporarily installed a hefty 36-inch theodolite, a surveying instrument, atop the castle. This Anglo-French Survey eventually led to the formation of the Ordnance Survey, Britain’s mapping agency. So, while admiring the sweeping views of London from Severndroog Castle, remember, you’re standing on a monument to love, victory, and surprisingly, the very maps we use today.

The story of Severndroog Castle in London is just one of many fascinating insights you can discover with Explory. To experience the city beyond its surface, you need more than just a map – you need a smart guide that reveals the background, the culture, and the character of each place. With Explory’s city guide, you can dive deeper into London and transform your visit into a unique city tour filled with stories that bring history and everyday life to light. Explory connects you with London in a new way. Our guide doesn’t just show you where to go – it enriches your journey with context and atmosphere. Through carefully designed routes and storytelling, you’ll uncover hidden gems and unexpected highlights that even locals might miss. The audio guide makes the city come alive, allowing you to listen while you walk and explore at your own pace. Our city guide is ideal for travelers who want more than sightseeing. Whether your interest is culture, architecture, or local traditions, Explory enables authentic exploration. Each city tour is flexible and intuitive, helping you experience London with freedom while still being guided by expert knowledge. By combining narrative, navigation, and discovery, Explory ensures your trip becomes an adventure filled with hidden gems and lasting impressions. Take the next step and download the Explory App today. Inside, you’ll find over 300 cities and more than 500,000 POIs and stories to explore. Whether you’re searching for a reliable guide, want to try an immersive audio guide, or plan a memorable city tour, Explory is your all-in-one companion. Begin your journey now and uncover the true essence of London – only with Explory.

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